基于HHT的船舶非线性横摇运动响应特性研究  

Research on Dynamic Response Characteristics of Ship Nonlinear Rolling Based on HHT

作　　者：林焰[1,2] 宋杨[1] 张明霞[1] 王运龙[1] 

机构地区：[1]大连理工大学船舶CAD工程中心,辽宁大连116023 [2]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116023

出　　处：《船舶工程》2013年第S1期22-24,183,共4页Ship Engineering

基　　金：公益性行业(农业)科研专项基金(201003024);国家自然科学基金(51203034)

摘　　要：针对航行于海上船舶的横摇运动具有非线性和非平稳的特点,探索采用希尔伯特-黄变换方法研究船舶在波浪中的非线性横摇运动的响应特性。对几种不同海况下船舶的典型运动响应,求得其Hilbert谱,通过分析所得谱图的特征,获得船舶非线性横摇运动响应的动力学特性。仿真结果表明,HHT方法在分析船舶非线性横摇运动的动力学特性研究中具有可行性和有效性,从而为船舶运动分析研究提供了一个新的方法。In view of the characteristics of nonlinear and non-stationary of ship rolling during sailing on the sea,the paper explores to adopt Hilbert-Huang transform to study the dynamic response characteristics of nonlinear rolling of ship in wave.Each Hilbert spectrum of typical dynamic responses under different wave environments is gained.Through the analysis of the spectrum features,the dynamic characteristics of ship nonlinear rolling response are gained.The simulation result shows that the HHT method is feasible and efficient in the analysis of dynamic characteristics of ship nonlinear rolling response,which offers a new method in the research of ship motion analysis.

关 键 词：非线性横摇 运动响应 希尔伯特-黄变换(HHT) 希尔伯特谱 

分 类 号：U661.32[交通运输工程—船舶及航道工程]